CN1290315A - Porous belts filter cloths - Google Patents

Porous belts filter cloths Download PDF

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Publication number
CN1290315A
CN1290315A CN99802936A CN99802936A CN1290315A CN 1290315 A CN1290315 A CN 1290315A CN 99802936 A CN99802936 A CN 99802936A CN 99802936 A CN99802936 A CN 99802936A CN 1290315 A CN1290315 A CN 1290315A
Authority
CN
China
Prior art keywords
cloth
band
layer
coating
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN99802936A
Other languages
Chinese (zh)
Inventor
R·P·莱登
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Madison Filter 981 Ltd
Original Assignee
Scapa Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scapa Group Ltd filed Critical Scapa Group Ltd
Publication of CN1290315A publication Critical patent/CN1290315A/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/086—Substantially impermeable for transferring fibrous webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1638—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate
    • B01D39/1653—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin
    • B01D39/1661—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin sintered or bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1669—Cellular material
    • B01D39/1676—Cellular material of synthetic origin
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/042—Acrylic polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyolefin or polystyrene (co-)polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/121—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyesters, polycarbonates, alkyds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/125—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyamides
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0464—Impregnants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B01D2239/0478—Surface coating material on a layer of the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0645—Arrangement of the particles in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0654—Support layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0668—The layers being joined by heat or melt-bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing

Abstract

A porous belt or filter cloth comprises a woven or nonwoven textile substrate (11), which is coated on at least one surface with a coagulated polymer layer (12). The layer (12) preferably substantially impregnates the substrate, and the textile substrate, if nonwoven, may be supported on a mesh membrane (23), or a spiral link fabric (32). Alternatively, a layer of sintered particles (42) may be incorporated over the substrate which is covered and impregnated by the coagulated polymer layer.

Description

Porous belts or filter cloth
The present invention relates to porous belts, for example, filter bag, filter press cloth and/or filter press (filterpresses), it for example is used for vertical automatic pressure filter, and also is suitable for as forming fabric, press felt, dryer fabric or be used for the conveyer belt of paper machine is perhaps as the corrugating roll mill band.
Known filter bag can be with the yarn or the fiber of woven cloths or non-weaving cloth, described cloth for example felt, sintering structure or spiral-link cloth as the primary filter medium.For these filters, the grain graininess lower limit that is kept is that size or the compactedness by the hole of fabric decides.The substrate of fabric can scribble thin polymer film, and formed thin polymer film has netted micropore (GB-A-2285935).When the yardstick of the particle of these reservations dropped to the submicron order size, the low ratio of hole and area did not allow the filtration of high volume, as needed in press filtration and papermaking machine belt application.
Microfiltration thing such as pigment and dyestuff as titanium dioxide, can not be filtered by band filter at present, because the fineness of particle is minimum.Yet wish to use band filter, because their filter efficiency height, and easy installing fabric.
The purpose of this invention is to provide a kind of porous belts structure, it is applicable to, for example filter bag or filter press or papermaking machine belt, and these must keep superfine particle, and have high liquid phase throughput.
According to the present invention, porous belts comprises to be weaved or the supatex fabric substrate, on the minimum one side of described fabric substrate, scribbles the polymeric material that solidifies.
Preferred use low viscous relatively material, for example about 500cP or lower, and have the material of relative high solids content.Low viscosity makes polymer can infiltrate fabric construction basically, and high relatively solid content prevents by the polymer bleed.The polymer treatment that fabric substrate is carried out causes durable relatively dark filter structure, and it can be operated under the high pressure of 10-20 crust, and unlikelyly causes subsiding of microcellular structure.Because polymeric layer infiltrates in the fabric construction, its intensity is also high, and this is that it is difficult for because abrasion, or back pressure is impacted and separated with substrate.
Webbing preferably partly floods with solidified polymeric, and is formed on the layer on coating surface or each coating surface.
Used polymer can be polyester, polyamide, for example polyacrylic polyolefin, or PAN.
The layer of coating and part dipping is when it, and for example, the DMF of employing 10～20% solid solutions can be applied in the substrate of fabric when solidifying.Solidified polymeric preferably directly is coated onto in the substrate, uses water-bath washing, and this water-bath has the DMF of reduction, thereby forms the hole.Coagulating agent can be foamed, and described foaming is carried out after can or solidifying at solidificating period immediately.Can adopt physical means or chemical foaming agent to foam.Blowing agent preferably comprises low boiling water-insoluble halogenated hydrocarbon, and the latter preferably has 10-50 ℃ boiling point.For example be 20-30 ℃.Preferred blowing agent comprises 1,2-two bromo-1,1,2,2-HFC-134a and trichlorine fluoroethane.
Solidifying of polymer may also be foamed, and can the fabric substrate by the heating dip coated obtain in the presence of heat coagulant.Suitable heat coagulant comprises vinyl alkyl ethers and its derivative, polyacetals, polythiaether, poly(ethylene oxide) and its derivative and poly-(expoxy propane/oxirane) and its derivative.Heat coagulant can be incorporated into the main chain of polymer.Usually being heated to temperature causes only solidifying for about 70 ℃.Heating surpasses this temperature and also causes foaming usually, if there are the words of blowing agent.
Solidify also and can realize by the pH value that adds suitable electrolyte and/or change polymer emulsion.For example, solidify and under the alkaline pH value, to carry out,, solidify and under acid ph value, to carry out for anionic polymer for cationic polymer.Heating subsequently can make it obtain satisfied foaming.
For example blade coating, dip-coating, wiping (lick) are coated with serigraphy or spraying enforcement coating can to adopt any coating technique.
Solidify generation and adhere to the fiber of fabric substrate or the polymer beads on the yarn, it enters into the gap between yarn and the fiber, and produces thinner pore structure, and this pore structure is less than the pore structure that is obtained separately by fiber or yarn.The foaming of polymer produces the thinner pore structure at the polymer particles intragranular, so resulting solidify and the part dip coating that foams can keep very thin particle.These particles can reach micron order, as above-mentioned dyestuff and pigment and china clay.
Machinery or chemical foaming technology can solidify use with solidifying to use or replace, and preferred embodiment according to filter bag of the present invention or papermaking machine belt can be passed through the following examples and reference will be made to the accompanying drawings, wherein:
Fig. 1 is a sectional view of weaving band according to of the present invention;
Fig. 2 is the sectional view according to non-woven band of the present invention;
Fig. 3 is the sectional view that is carried on the nonwoven fabric on the spiral-link; With
Fig. 4 is the similar figure that comprises by the band of fabric reinforcement sinter layer.
In Fig. 1, what partial cross section figure showed is primary filter band 10, and this filter band 10 comprises Woven fabric substrate 11.Fabric substrate scribbles and that solidify from one side to small part dipping and polymeric layer 12 foaming, shown in the section line in the accompanying drawing.This layer is to apply by for example aforesaid a kind of method, and has pore structure, and the latter obtains by coagulative non-compacting essence, comprises the coagulum that enters into the gap between the fabric yarn, and further obtains by polymer foaming.
In Fig. 2, show the partial cross section structure of cascade filtration band 20.It comprises the non-woven fabric substrate 21 of staple fibre fibrage for example or Nomex.Scribble on one surface and solidify and foamable polymer layer 22, described polymer to small part penetrates and to the substrate 21 of small part dipping, shown in the section line of for example figure.Layer 22 is similar to Fig. 1 coating, and because the non-closely knit consolidated structure and the foaming of polymer obtain similar microcellular structure.Fibrage 21 is supported by reticular membrane 23.
Fibrous nonwoven layer 31 is supported on the spiral link fabric 32 in Fig. 3, and with solidifying and 33 coating of foamable polymer layer and basic dipping.Basic dipping is meant that polymer penetrates layer 31 with significant degree and preferably penetrates at least one half thickness of this layer, or even penetrates fibrage 31 substantially.
In Fig. 4, solidify and the polymeric layer 41 that foams is carried on the layer 42 of sintered particles, the polymer of layer 41 penetrates the gap between the sintered particles.Sinter layer 42 is reinforced or is carried on the tissue layer 43 by tissue layer 43.This layer 43 is shown as woven cloths in the drawings, but it can be a non-weaving cloth.Sintered particles can be the bead of polymeric material or metal.
In described embodiment, solidified polymeric can be solidified with following: water, steam or superheated steam, and can be polyurethane, perhaps for improving water-fast degradability, can be selected from for example polyisoprene, polybutadiene, polyvinylidene chloride, PVC, polychlorobutadiene and styrene butadiene polymer or its mixture.The foaming of solidified polymeric can be carried out when solidifying or after solidifying immediately.Can or adopt chemical foaming agent carry out by physical means, described chemical foaming agent can be, for example, low boiling, the insoluble halogenated hydrocarbon of water, its boiling point for example are-40～+ 50 ℃, and example is 1,2-two bromo-1,1,2,2-HFC-134a and trichlorine fluoroethane.
The foaming of polymer and solidify and can obtain by heating dip coated material is preferably in the presence of heat coagulant.Suitable heat coagulant comprises vinyl alkyl ethers and its derivative, polyacetals, polythiaether, poly(ethylene oxide) and its derivative and poly-(expoxy propane/oxirane) and its derivative.Heat coagulant can be incorporated into the main chain of polymer.Usually being heated to temperature causes only solidifying for about 70 ℃.Heating surpasses this temperature and also causes foaming usually, if there are the words of blowing agent.
Condense and also can realize by the pH value that adds suitable electrolyte and/or change polymer emulsion.For example, solidify and under the alkaline pH value, to carry out for cationic polymer; Solidify and under acid ph value, to carry out for anionic polymer.Heating subsequently can make it obtain satisfied foaming.
Solidifying coating can be particle enhancing or fibre-reinforced.The fiber that the intensity of single grid can be by adding fine chopping in the solidifying the network polymers network for example particle such as the PTFE particle of RYTON fiber and/or fine dispersion improves.These particles and/or fiber should have chemical inertness, heat endurance and acidproof and/or alkaline ideally, and these should be similar to solidified polymeric at least.Particle and fiber will join in the polymer emulsion before solidifying.
The coating thickness of preferred filter cloth is 0.5-2.0mm, is equivalent to add 50-250 (preferred 120-180) g/m 2Polymer (by weight).
Although describe especially as filter bag, for example be used for keeping such as ultra-fine grains such as pigment, titanium dioxide, dyestuff or china clay, the present invention is also included within and needs wherein to keep that fine fibre and high water see through, such as forming fabric, press felt, filter cloth, rotary drum cover (drum covers), the papermaking machine belt of dryer fabric or conveyer belt etc.

Claims (12)

1. comprise and weave or the porous belts and/or the filter cloth of supatex fabric substrate, at least one surface of described substrate, scribble solidified polymeric layer.
2. according to the band or the cloth of claim 1, wherein, described solidified polymeric material has the relative low viscosity of the highest about 200cp and has the material of relative high solids content.
3. according to the band or the cloth of claim 1, wherein, fabric substrate to small part is flooded with solidified polymeric, described solidified polymeric directly is coated in the substrate and with the water-bath washing of the DMF with reduction amount, thereby the layer on being formed on coating surface or each coating surface, also in layer, form the hole.
4. according to the band or the cloth of claim 1, wherein, the polymer of solidified polymeric layer is or comprises any among polyester, polyamide, polyolefin, urethane polymer or the PAN.
5. according to the band or the cloth of claim 1, wherein, the layer with the part dipping of coating is when the DMF of this layer employing 10-20% solid solution solidifies, and is applied on the fabric substrate.
6. according to the band or the cloth of claim 1, wherein, solidified polymeric is foamed, and described foaming is carried out when solidifying or after solidifying immediately.
7. according to the band or the cloth of claim 6, wherein, use blowing agent and blowing agent to comprise the water-insoluble halogenated hydrocarbon of low boiling, its boiling spread is 10-50 ℃.
8. according to the band or the cloth of claim 7, blowing agent is 1,2-two bromo-1,1,2,2-HFC-134a and trichlorine fluoroethane.
9. according to the band or the cloth of claim 5, wherein, solidify and be in the presence of heat coagulant to obtain by the fabric substrate after the heating coating, described heat coagulant is following any: vinyl alkyl ethers or derivatives thereof, polyacetals, polythiaether, poly(ethylene oxide) or poly-(expoxy propane/oxirane) or derivatives thereof.
10. according to the band or the cloth of claim 9, wherein, heat coagulant is incorporated in the coated polymeric.
11. according to the band or the cloth of claim 9, wherein, the pH value of solidifying by adding electrolyte and/or change polymer emulsion obtains.
12. according to the band or the cloth of claim 1, wherein, coating is by blade coating, dip-coating is wiped (lick) and is coated with, any enforcement in serigraphy and the spraying.
CN99802936A 1998-02-14 1999-02-11 Porous belts filter cloths Pending CN1290315A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9803172.7 1998-02-14
GBGB9803172.7A GB9803172D0 (en) 1998-02-14 1998-02-14 Porous belts

Publications (1)

Publication Number Publication Date
CN1290315A true CN1290315A (en) 2001-04-04

Family

ID=10827003

Family Applications (1)

Application Number Title Priority Date Filing Date
CN99802936A Pending CN1290315A (en) 1998-02-14 1999-02-11 Porous belts filter cloths

Country Status (11)

Country Link
EP (1) EP1055027A1 (en)
CN (1) CN1290315A (en)
AR (1) AR014955A1 (en)
AU (1) AU2532599A (en)
BR (1) BR9907842A (en)
CA (1) CA2319452A1 (en)
GB (1) GB9803172D0 (en)
NO (1) NO20004041L (en)
PE (1) PE20000379A1 (en)
WO (1) WO1999041447A1 (en)
ZA (1) ZA991066B (en)

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CN102216524A (en) * 2008-07-24 2011-10-12 福伊特专利公司 Press felt and method for producing the same
CN102272380A (en) * 2008-11-20 2011-12-07 沃依特专利有限责任公司 Press felt and method for the manufacture thereof
CN105155277A (en) * 2010-03-16 2015-12-16 东丽株式会社 Sheet-like material and method for producing same
CN106283818A (en) * 2016-08-24 2017-01-04 四川环龙技术织物有限公司 A kind of paper machine clothing and the technique being used for producing this paper machine clothing
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CN111659186A (en) * 2020-06-13 2020-09-15 安徽新育轩环保科技有限公司 Manufacturing method of self-cleaning plush filter cloth for sewage treatment

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CN113308910B (en) * 2021-07-01 2023-07-25 安徽省太和县众友筛网滤布制造有限公司 Filter cloth for solid-liquid separation, device and manufacturing method

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GB9408307D0 (en) * 1994-04-27 1994-06-15 Scapa Group Plc Coated fabric
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GB2316015B (en) * 1996-08-10 2000-08-30 Scapa Group Plc Polymer pore structure

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CN102216524A (en) * 2008-07-24 2011-10-12 福伊特专利公司 Press felt and method for producing the same
CN102272380A (en) * 2008-11-20 2011-12-07 沃依特专利有限责任公司 Press felt and method for the manufacture thereof
CN102272380B (en) * 2008-11-20 2014-03-12 沃依特专利有限责任公司 Press felt and method for manufacture thereof
CN105155277A (en) * 2010-03-16 2015-12-16 东丽株式会社 Sheet-like material and method for producing same
CN106283818A (en) * 2016-08-24 2017-01-04 四川环龙技术织物有限公司 A kind of paper machine clothing and the technique being used for producing this paper machine clothing
CN106283818B (en) * 2016-08-24 2018-03-23 四川环龙技术织物有限公司 A kind of paper machine clothing and the technique for producing the paper machine clothing
CN106784883A (en) * 2017-03-13 2017-05-31 大连理工大学 The preparation method of the smooth flawless low-carbon (LC) carrying capacity microporous layers of Proton Exchange Membrane Fuel Cells
CN106784883B (en) * 2017-03-13 2019-07-16 大连理工大学 The preparation method of the smooth flawless low-carbon carrying capacity microporous layers of Proton Exchange Membrane Fuel Cells
CN111659186A (en) * 2020-06-13 2020-09-15 安徽新育轩环保科技有限公司 Manufacturing method of self-cleaning plush filter cloth for sewage treatment

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PE20000379A1 (en) 2000-05-10
BR9907842A (en) 2000-10-24
CA2319452A1 (en) 1999-08-19
AU2532599A (en) 1999-08-30
NO20004041D0 (en) 2000-08-11
NO20004041L (en) 2000-10-06
WO1999041447A1 (en) 1999-08-19
EP1055027A1 (en) 2000-11-29
GB9803172D0 (en) 1998-04-08
AR014955A1 (en) 2001-04-11
ZA991066B (en) 1999-08-10

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